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Finding the Fourth Proportional to 101,463.60, 139,934.40 and 76,029.60

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Solution

The fourth proportional to 101,463.60, 139,934.40 and 76,029.60 is: 104,856.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,463.60 : 139,934.40 = 76,029.60 : x
  2. Step 2: Convert to fraction form
    101,463.60/139,934.40 = 76,029.60/x
  3. Step 3: Cross multiply
    101,463.60x = 139,934.40 × 76,029.60
  4. Step 4: Simplify right side
    101,463.60x = 10,639,156,458.24
  5. Step 5: Solve for x
    x = 10,639,156,458.24/101,463.60
  6. Step 6: Final answer
    x = 104,856.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.